How to be stress free?

I recently found out that stress causes me to be hospitalised. The hospital has told me if I want to avoid it in the future I need to lead a stress free life. I honestly have no idea how, my life has been extremely stressful since I was 7yo. I have a lot on my plate atm fighting for money back stolen from me, fighting with cps so my family can be ok, fighting with family because they don't understand, dealing with mental and physical disabilities, etc. Can anyone give me advice on how to have a lowered stress life? I don't feel overly stressed before I'm hospitalised compared to when I'm having a very bad stressful day.